No Thunderbird Sync

Hello,

I use contacts plus on my iphone, so I know the config from the server is right.
But when I try it with sogoconnect nothing happend.
I get no error, on my server log

this link: https://domain.de/remote.php/contactsplus/

admin [07/Jan/2016:07:58:42 +0100] "PROPFIND /remote.php/contactsplus/ HTTP/1.1" 207 826 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 Lightning/4.0.4.1"

But when my phones sync
this link: https://domain.de/remote.php/contactsplus/principals/admin/

- - [07/Jan/2016:08:00:39 +0100] "OPTIONS /remote.php/contactsplus/principals/admin/ HTTP/1.1" 401 303 "-" "iOS/9.2 (13C75) dataaccessd/1.0"
- admin [07/Jan/2016:08:00:39 +0100] "OPTIONS /remote.php/contactsplus/principals/admin/ HTTP/1.1" 200 0 "-" "iOS/9.2 (13C75) dataaccessd/1.0"
- admin [07/Jan/2016:08:00:39 +0100] "PROPFIND /remote.php/contactsplus/principals/admin/ HTTP/1.1" 207 1202 "-" "iOS/9.2 (13C75) dataaccessd/1.0"
- - [07/Jan/2016:08:00:39 +0100] "PROPFIND /remote.php/contactsplus/addressbooks/admin/ HTTP/1.1" 401 303 "-" "iOS/9.2 (13C75) dataaccessd/1.0"
admin [07/Jan/2016:08:00:39 +0100] "PROPFIND /remote.php/contactsplus/addressbooks/admin/ HTTP/1.1" 207 3853 "-" "iOS/9.2 (13C75) dataaccessd/1.0"
admin [07/Jan/2016:08:00:40 +0100] "PROPFIND /remote.php/contactsplus/addressbooks/admin/contacts/ HTTP/1.1" 207 524 "-" "iOS/9.2 (13C75) dataaccessd/1.0"

I do not know where the error is.

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[Pantek59]

I am using contacts plus to sync it with Thunderbird and it works (almost) fine. For some reason, the contact pics are not synced, but the rest works.

I know this does not solve your problem. Just wanted to let you know that the combination can work, too. :)